... ,sturdy and durableSIX:Equipment Installation And InspectionOpen the therapy apparatus,load liquid nitrogen,tighten.Install the cold ... applied to dermatologic , ophthalmologic,ophthalmologicandotorhinolaryngologic,anorectal, gynecologic, oncologic therapy.Two:Work PrincipleDZ_4 low temperature treatment instrument uses liquid ... head:nineProducts Introduction:oneWarranty card:one freeze therapy unit